Electromagnetic structure of trinucleons

Journal Article · Tue Dec 01 04:00:00 EST 1998 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.58.3069· OSTI ID:670242

Marcucci, L E ^[1]; Riska, D O ^[2]; Schiavilla, R ^[3]

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1. Department of Physics, Old Dominion University, Norfolk, Virginia 23529 (United States)
2. Department of Physics, University of Helsinki, SF-00014 Helsinki (Finland)
3. Jefferson Lab, Newport News, Virginia 23606 (United States)

The electromagnetic form factors of the trinucleons {sup 3}H and {sup 3}He are calculated with wave functions obtained with the Argonne v{sub 18} two-nucleon and Urbana IX three-nucleon interactions. Full account is taken of the two-body currents required by current conservation with the v{sub 18} interaction as well as those associated with N{Delta} transition currents and the currents of {Delta} resonance components in the wave functions. Explicit three-nucleon current operators associated with the two-pion exchange three-nucleon interaction arising from irreducible S-wave pion-nucleon scattering are constructed and shown to have very little effect on the calculated magnetic form factors. The calculated magnetic form factor of {sup 3}H, and charge form factors of both {sup 3}H and {sup 3}He are in satisfactory agreement with the experimental data. However, the position of the zero in the magnetic form factor of {sup 3}He is slightly underpredicted. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 670242
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 58; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTROMAGNETIC FORM FACTORS
HELIUM 3
NUCLEAR STRUCTURE
PION-NUCLEON INTERACTIONS
TRITONS
WAVE FUNCTIONS